ParaView-5.0.1: Added the source-tree to ThirdParty-dev and patched as described in the README file

Resolves bug-report http://bugs.openfoam.org/view.php?id=2098

ParaView-5.0.1/VTK/Examples/Infovis/Python/vertex_degree_programmable.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python
+from vtk import *
+
+vertexDegree = vtkProgrammableFilter()
+
+def computeVertexDegree():
+  input = vertexDegree.GetInput()
+  output = vertexDegree.GetOutput()
+
+  output.ShallowCopy(input)
+
+  # Create output array
+  vertexArray = vtkIntArray()
+  vertexArray.SetName("VertexDegree")
+  vertexArray.SetNumberOfTuples(output.GetNumberOfVertices())
+
+  # Loop through all the vertices setting the degree for the new attribute array
+  for i in range(output.GetNumberOfVertices()):
+      vertexArray.SetValue(i, output.GetDegree(i))
+
+  # Add the new attribute array to the output graph
+  output.GetVertexData().AddArray(vertexArray)
+
+vertexDegree.SetExecuteMethod(computeVertexDegree)
+
+
+# VTK Pipeline
+randomGraph = vtkRandomGraphSource()
+randomGraph.SetNumberOfVertices(25)
+randomGraph.SetStartWithTree(True)
+vertexDegree.AddInputConnection(randomGraph.GetOutputPort())
+
+view = vtkGraphLayoutView()
+view.AddRepresentationFromInputConnection(vertexDegree.GetOutputPort())
+view.SetVertexColorArrayName("VertexDegree")
+view.SetVertexLabelVisibility(True)
+view.SetVertexColorArrayName("VertexDegree")
+view.SetColorVertices(True)
+view.SetVertexLabelFontSize(20)
+
+theme = vtkViewTheme.CreateMellowTheme()
+theme.SetLineWidth(3)
+theme.SetPointSize(10)
+view.ApplyViewTheme(theme)
+theme.FastDelete()
+view.ResetCamera()
+view.Render()
+view.GetInteractor().Start()
+